Hey guys! if you are wondering how to jump to developer ROM from Stable ROM in Redmi Note 4 without unlockimg bootloader this tip can help you.

All you need to do is download the developer ROM of version 7.2.9 or 7.2.16 (dont download 7.3.x versions they wont install through updater app) from the forum and go to your updater app and select the three dot menu and select choose update from storage.

Then navigate to the downloaded 7.2.9/7.2.16 ROM and flash.

Make sure that you have backed up all your data since this method will erase everything from your phone.

Then you can upgrade to the latest version of MIUI dev ROM through the updater app. (You will recieve OTA or you can download the latest version from forum manually and flash using the above method)